exceptions
Exceptions specific to python-opc.
The base exception class is OpcError.
Bases: Exception
Base error class for python-opc.
Bases: OpcError
Raised when a package cannot be found at the specified path.
Also raised when the file is present but is not a readable OPC package, for example a truncated download or a file that is not a zip archive at all.
Bases: UserWarning
Issued when a relationship targets a part that is not present in the package.
The relationship is dropped on load, which is what Word does with one. Filter this
category to silence the warning, or turn it into an error with
warnings.simplefilter.
Bases: PackageNotFoundError
Raised when the file is a password-protected (encrypted) Office document.
An encrypted document is an OLE compound file wrapping the encrypted package, not a zip archive, so it cannot be read without the password. Subclasses PackageNotFoundError so that callers already handling an unreadable file keep working; catch this class specifically to tell the user their file is encrypted.